[9LIVES]

Very interesting topic. When playing online, I VERY rarely make these types of mistakes. Having everything organized, the fast rate of play, etc., keeps me focused.

In a live tourney or in an 8-hour session, I probably make one or two.

I'll tell you the worst (yet best) "mistake" I have ever made. I was head's up in the pot ($2/$5 NL). I flopped a set of sixes and a boat on the turn...and didn't realize it. The turn card was also a flush [scare] card and the guy went all in. I folded my pocket 6's face up, and he said, "You're folding a boat?!?!"

I felt like such an idiot...for a split second...then I quipped, "Yeah, I know you made that straight flush." I was, of course, 100% joking.

As the dealer was starting to take my cards, the player said, "You know your cards are still live. I am a nice guy and will let you call if you want to."

The dealer stopped...I went into the tank...and realized...this dude really does have the straight flush.

I told the dealer to muck my cards, and the guy, in half-disgust/half-awe flipped over his straight flush. "That's the most impressive read AND lay down I have ever seen," he said.

The dealer agreed...but squinted his eyes at me in skepticism. I just winked at him.